meanwhile, fbi agent who helped start the whole investigation that led to david petraeus's resignation has now been identified as 47-year-old frederick humphreys. he first took a complaint from his friend, jill kelley, about threatening e-mails. that led to the discovery of extramarital affair between petraeus and hi biographer paula broadwell. >>> time is now 7:18. less than a week after c pat trees resigned, the -- petraeus, the cia is under scrutiny on how it handling the deadly attack in libya. we have more about the congressional hearings. allison? >> reporter: four house and senate committees are holding hearings about the assault in libya. most of them are classified but this one is open to the public, and the press. the house foreign affairs committee is investigating what happened on september 11th in libya, and how to make sure something similar doesn't happen at other u.s. posts over seas. lawmakers are asking why wasn't there more security at the consulate when four americans, including ambassador stevens were killed, and why didn't the cia anticipate the attack or do more